Kobold SMV Manual de usuario

Operating Instructions

for

Flow Meter / Monitor

Model: SMV

SMV

page 2 SMV K18/0322

1. Contents

1.Contents ........................................................................................................ 2

2.Note .............................................................................................................. 3

3.Instrument Inspection .................................................................................... 3

4.Regulation Use ............................................................................................. 4

5.Operating Principle ........................................................................................ 5

5.1.SMV ..................................................................................................... 5

5.2.SMV-..21H and SMV-..22H .................................................................. 6

6.Mechanical Connection ................................................................................. 6

7.Electrical Connection .................................................................................... 7

7.1.SMV-1... and SMV-3... with Plug Connection ...................................... 7

7.2.Note for Reed contacts ........................................................................ 7

7.3.Example for Contact Protective Measures ........................................... 7

8.Use in hazardous area .................................................................................. 8

8.1.Statement an apparatus not containing an own potential ignition

source .................................................................................................. 8

8.2.ATEX contact ...F0... (not for SMV-...21H/...22H) ................................ 9

8.3.ATEX reed contact 41R57** ............................................................... 9

9.Operation .................................................................................................... 16

10.Maintenance ............................................................................................... 17

11.Technical Information .................................................................................. 18

12.Order Codes ............................................................................................... 20

13.Recommended Spare Parts ........................................................................ 22

14.Dimensions ................................................................................................. 23

14.1.SMV ................................................................................................... 23

14.2.SMV-...21H/...22H .............................................................................. 24

15.EU Declaration of Conformance (SMV) ...................................................... 27

16.UK Declaration of Conformity (SMV) ........................................................... 28

17.EU Declaration of conformance (Reed contact 41R57**) ............................ 29

18.Statement of conformity reed contact 41R57** ........................................... 30

19.Declaration of the Manufacturer (F0) .......................................................... 34

20.Ex-Type Examination Certificate Magnetic reed switch (F0) ....................... 35

21.IECEx certificate (F0) .................................................................................. 38

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: +49(0)6192-2990

Fax: +49(0)6192-23398

E-Mail: [email protected]

Internet: www.kobold.com

SMV

SMV K18/0322 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit

into operation. Follow the instructions precisely as described herein.

The instruction manuals on our website www.kobold.com are always for currently

manufactured version of our products. Due to technical changes, the instruction

manuals available online may not always correspond to the product version you

have purchased. If you need an instruction manual that corresponds to the

purchased product version, you can request it from us free of charge by email

([email protected]) in PDF format, specifying the relevant invoice number and

serial number. If you wish, the operating instructions can also be sent to you by

post in paper form against an applicable postage fee.

The devices are only to be used, maintained and serviced by persons familiar

with these operating instructions and in accordance with local regulations

applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit SMV should be used only when the

machines fulfil the EC-machine guidelines.

as per PED 2014/68/EU

In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the PED

2014/68/EU no CE mark.

Pipe

Table 8

Group 1

dangerous fluids

Table 9

Group 2

no dangerous fluids

SMV, 1/4" - 1" Art. 4, § 3 Art. 4, § 3

SMV, brass, 1 1/4" not deliverable Art. 4, § 3

SMV, stainless steel, 1 1/4" Cat. II Art. 4, § 3

3. Instrument Inspection

Instruments are inspected before shipping and sent out in perfect condition.

Should damage to a device be visible, we recommend a thorough inspection of

the delivery packaging. In case of damage, please inform your parcel service /

forwarding agent immediately, since they are responsible for damages during

transit.

Scope of delivery:

The standard delivery includes:

 Flow Meter / Monitor model: SMV

SMV

page 4 SMV K18/0322

4. Regulation Use

Series SMV instruments are used for measuring and monitoring liquids. Only

clean, low viscosity and homogeneous media may be measured, against which

the used materials are resistant. On higher viscous media large measuring errors

may occur particularly. Large dirt particles may lead to blocking of the float and

therefore large measurement and signal errors. Ferrite particles that stick to the

float body (with internal magnet) may also lead to a similar effect. (We

recommend a magnet filter).

The instruments are provided as follows:

Flow Measurement

The actual flow may be taken locally from the pointer indication, which is mounted

at the side of the housing. The scale shows the flow rate directly in litres per

minute of water.

Limit Value Contacts (only model SMV-1.. and SMV-3..)

For the monitoring of the flow rate, the instruments may be fitted with one or two

adjustable limit value contacts.

Type of contact:

 N/O contact (standard)

 Changeover contact (standard)

 N/O contact (cCSAus)

 Changeover contact (cCSAus)

The contact is adjustable over the full measuring range by taking the hysteresis

into consideration.

SMV

SMV K18/0322 page 5

5. Operating Principle

5.1. SMV

The KOBOLD Flow Meters and Switches model SMV-...

are based on the principle of the well-known float-type

flow meters except for the conventional tapering

measuring tube.

These patented instruments are provided instead with a

cylindrical flow tube with conical slots around the

periphery. This eliminates the usual problems of guiding

the cylindrical float within a tapering measuring glass.

The novel design including the provision of an

appropriately dimensioned annular gap of constant

width between the float and the flow tube has enabled

the sensitivity to dirt to be considerably reduced.

The float comprises permanent magnets actuating a

bistable reed contact external to the flow circuit, that is,

the flowing medium is hermetically separated from the

electrical contact. In addition, it is embedded in a height-

adjustable switch housing thus ensuring that the contact

cannot be damaged even by an aggressive atmosphere.

As the medium enters the instrument the float rises. Once its magnetic field

reaches the contact tips of the reed switch the contact closes. As the flow

increases the float rises further until it reaches its stop. This prevents the float

from going beyond the contact range of the magnetic operating tube, that is, the

contact remains closed thus ensuring bistable switching.

With the models SMV-2... and SMV-3... the magnetic field also activates an

external, that is, hermetically separated indicator, as a result of which flows are

measured accurately even at high operating pressures.

The magnetic field and the indicator are designed so as to ensure that the pointer

follows even abrupt changes in flow rate.

SMV

page 6 SMV K18/0322

5.2. SMV-..21H and SMV-..22H

KOBOLD flow meters and -switches series SMV-...21H and SMV-...22H are

equipped with a spring-loaded float which is guided within a cylindrical measuring

pipe and in opposite to the principals known up to now it is hollow. The medium

flows through a circular clearance, which is built by the bore of the float and the

mandrel bar (conical shaft) inside.

The float comprises permanent magnets actuating a bistable reed contact

external to the flow circuit, that is, the flowing medium is hermetically separated

from the electrical contact. In addition, it is embedded in a height-adjustable

switch housing thus ensuring that even an aggressive atmosphere cannot

damage the contact.

As the medium enters the instrument the float rises. Once the magnetic field

reaches the contact tips of the reed switch the contact closes. As the flow

increases the float rises further until it reaches its stop. This prevents the float

from going beyond the contact range of the magnetic operating tube, that is, the

contact remains closed thus ensuring bistable switching.

With the models SMV-2... and SMV-3... the magnetic field also activates an

external, that is, hermetically separated indicator, as a result of which flows are

measured accurately even at high operating pressures.

The magnetic field and the indicator are designed so as to ensure that the pointer

follows even abrupt changes in flow rate.

6. Mechanical Connection

Before installation:

 Make sure that the permitted max. operating pressure

and temperature ratings are not exceeded.

 The installation of the unit takes place vertically in the

pipe. Flow direction is from bottom to top (according

the arrow).

 Remove all the transport safety locks and ensure that

no packing material particles remain inside the unit.

 The sealing of connection joints can be realised

through Teflon tape or similar material.

 The units may not be installed within the influence of

an inductive field.

 If possible, after the mechanical installation, the

sealing of connection joints/pipes should be checked.

SMV

SMV K18/0322 page 7

7. Electrical Connection

7.1. SMV-1... and SMV-3... with Plug Connection

 Make sure that the supply wires are de-energized.

 Loosen the holding screw of the plug and pull out the cap

from the socket.

 Make connection inside the plug-cap according to the

wiring diagram.

 If the contact has not been adjusted yet, it would be

appropriate to do so at this point.

(see section 9 Operation)

 Push on the plug to the socket, by using the locking screw.

(see section 9 Operation).

7.2. Note for Reed contacts

Attention! The given electrical specifications of reed switches may

never be exceeded, even for a short time. For higher switching

capacities we recommend the use of contact protection relays or

any other contact protection device.

 After your designated external units are connected to the limit contact and

adjustment of desired switching points is accomplished, then all the work

regarding connections is finished.

 The unit can now be set in operation.

7.3. Example for Contact Protective Measures

For capacitive and inductive loads (long conductors and relay/protection) we

recommend the following protective schemes.

SMV

page 8 SMV K18/0322

8. Use in hazardous area

8.1. Statement an apparatus not containing an own potential

ignition source

SMV

SMV K18/0322 page 9

8.2. ATEX contact ...F0... (not for SMV-...21H/...22H)

II 2G Ex mb IIC T6 Gb

II 2 D Ex mb IIC T80 °C Db

max. 250 VAC/1.5 A/100 VA

8.3. ATEX reed contact 41R57**

ATEX N/O contact 41R57

II 3G Ex ic IIC T4 Gc

II 3 D Ex ic IIIC T125 °C Dc

-20 °C ≤Ta≤80 °C

max. 250 VAC/DC/1.5 A/100 W/100 VA

ATEX changeover contact 41R57U

II 3G Ex ic IIC T4 Gc

II 3 D Ex ic IIIC T125 °C Dc

-20 °C ≤Ta≤80 °C

max. 250 VAC/DC/1 A/30 W/60 VA

SMV

page 10 SMV K18/0322

Ex-relevant excerpt of the operating instructions of the reed contact

41R57 **

1. Preambel

This excerpt of the operating instructions only represents the ex-relevant aspects.

It is copied into the original operating manual in the same or analogous form;

Textual changes are permitted, the ex-relevant statements remain.

To ensure the function and for your own safety, please read the enclosed

operating instructions carefully before you begin the installation. If you have any

questions, please contact the KOBOLD Messring GmbH, Hofheim. It applies with

the original operating instructions.

The following standard issues were considered in the evaluation of the product:

a) IEC 60079-0:2017 Ed. 7 / EN 60079-0:2018 Explosive atmospheres –

Part 0: Equipment - General requirements

b) IEC 60079-11:2011 Ed. 6 + Corr. 2012 / EN 60079-11:2012 Explosive

atmospheres - Part 11: Equipment protection by intrinsic safety "i"

2. General information on explosion protection

The reed switches work together with various KOBOLD products and serve there

for monitoring. It is available as N/O contact or changeover contact.

The electrical connection is made via a plug - only in intrinsically safe systems.

The reed switch is intended for commercial use and may only be used in

accordance with the specifications in the technical documentation of Kobold and

the information on the nameplate. It is only operated together with certified

products via an intrinsically safe circuit. They comply with the valid standards and

regulations.

The installation regulations (e.g. EN 60079-14) for systems in potentially

explosive atmospheres must be observed.

Further important details can be found in the corresponding EC-type examination

certificate.

Permitted use

• The intrinsically safe reed switch can be used as follows:

• In Zone 2 (Gas-Ex, EPL Gc) in explosion groups IIA, IIB and IIC

• In Zone 22 (Dust-Ex, EPL Dc) in explosion groups IIIA, IIIB and IIIC

• The requirements for simple electrical equipment for use in intrinsically safe

circuits in zones 1/21 are fulfilled.

• The qualification regarding the surface temperature is T4. For all gases, vapors,

mists with an ignition temperature> 135 ° C the equipment is not an ignition

source.

• In the dust Ex area, 125 ° C is the reference temperature for further

consideration regarding the safety distance from the smoldering temperature.

• The ambient temperature range is -20 ° C ≤ Ta ≤ 80 ° C.

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